Patents by Inventor Sm Shajed Hasan

Sm Shajed Hasan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Systems and methods for monitoring sensors
    Patent number: 9389260
    Abstract: An impedance analyzer is provided. The analyzer includes a signal excitation generator comprising a digital to analog converter, where a transfer function of the digital to analog converter from digital to analog is programmable. The impedance analyzer further includes a receiver comprising a low noise amplifier (LNA) and an analog to digital converter (ADC), where the LNA is a current to voltage converter; where the programmable digital to analog transfer function is implemented by a direct digital synthesizer (DDS) and a voltage mode digital to analog converter, or a digital phase locked loop (PLL), or both. Further, a multivariable sensor node having an impedance analyzer is provided. Furthermore, a multivariable sensor network having a plurality of multivariable sensor nodes is provided.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: July 12, 2016
    Assignee: General Electric Company
    Inventors: Radislav Alexandrovich Potyrailo, Jeffrey Michael Ashe, Sm Shajed Hasan, Naresh Kesavan Rao, Krishnakumar Sundaresan
  • Systems and methods for monitoring sensors
    Patent number: 9147144
    Abstract: A method for multivariable measurements using a single-chip impedance analyzer includes providing a sensor, exposing the sensor to an environmental parameter, determining a complex impedance of the sensor over a measured spectral frequency range of the sensor, and monitoring at least three spectral parameters of the sensor.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 29, 2015
    Assignee: General Electric Company
    Inventors: Radislav Alexandrovich Potyrailo, Jeffrey Michael Ashe, Sm Shajed Hasan, Naresh Kesavan Rao, Krishnakumar Sundaresan
  • SYSTEMS AND METHODS FOR MONITORING SENSORS
    Publication number: 20140095102
    Abstract: An impedance analyzer is provided. The analyzer includes a signal excitation generator comprising a digital to analog converter, where a transfer function of the digital to analog converter from digital to analog is programmable. The impedance analyzer further includes a receiver comprising a low noise amplifier (LNA) and an analog to digital converter (ADC), where the LNA is a current to voltage converter; where the programmable digital to analog transfer function is implemented by a direct digital synthesizer (DDS) and a voltage mode digital to analog converter, or a digital phase locked loop (PLL), or both. Further, a multivariable sensor node having an impedance analyzer is provided. Furthermore, a multivariable sensor network having a plurality of multivariable sensor nodes is provided.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Radislav Alexandrovich Potyrailo, Jeffrey Michael Ashe, Sm Shajed Hasan, Naresh Kesavan Rao, Krishnakumar Sundaresan
  • SYSTEMS AND METHODS FOR MONITORING SENSORS
    Publication number: 20140091811
    Abstract: A method for multivariable measurements using a single-chip impedance analyzer includes providing a sensor, exposing the sensor to an environmental parameter, determining a complex impedance of the sensor over a measured spectral frequency range of the sensor, and monitoring at least three spectral parameters of the sensor.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Radislav Alexandrovich Potyrailo, Jeffrey Michael Ashe, Sm Shajed Hasan, Naresh Kesavan Rao, Krishnakumar Sundaresan